/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.smartloli.kafka.eagle.api;

import com.alibaba.fastjson.JSONObject;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.smartloli.kafka.eagle.application.dto.DashboardDisplayInfo;
import org.smartloli.kafka.eagle.application.dto.KafkaTopicInfo;
import org.smartloli.kafka.eagle.application.service.DashboardService;
import org.smartloli.kafka.eagle.infra.constant.KafkaConstants;
import org.smartloli.kafka.eagle.infra.query.TopicRankQuery;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * Kafka Dashboard Controller
 * @author smartloli.
 * Created by Sep 6, 2016.
 * Update by hexiang 20170216
 */
@Api("Dashboard Controller")
@RestController
@RequestMapping("/dashboard")
public class DashboardController {

	@Autowired
	private DashboardService dashboardService;

	@GetMapping(value = "/kafka")
    @ApiOperation("Get Kafka Cluster Info")
	public DashboardDisplayInfo dashboardDisplayInfo(HttpSession httpSession) {
		String clusterAlias = httpSession.getAttribute(KafkaConstants.CLUSTER_ALIAS).toString();
		return dashboardService.getDashboard(clusterAlias);
	}

    /**
     * Get Kafka Topic Info
     * @param tkey：logsize/capacity
     */
	@GetMapping(value = "/topic/rank/table/{tkey}")
    @ApiOperation("Get Topic Info")
	public List<KafkaTopicInfo> dashTopicRank(@PathVariable("tkey") String tkey, HttpSession httpSession) {
		String clusterAlias = httpSession.getAttribute(KafkaConstants.CLUSTER_ALIAS).toString();
        TopicRankQuery topicRankQuery = new TopicRankQuery();
        topicRankQuery.setTkey(tkey);
        topicRankQuery.setCluster(clusterAlias);
        return dashboardService.getTopicRank(topicRankQuery);
	}
    
    @GetMapping(value = "/os/mem")
    @ApiOperation("Get System OS info")
    public JSONObject dashOSMemAjax(HttpServletRequest request) {
        HttpSession session = request.getSession();
        String clusterAlias = session.getAttribute(KafkaConstants.CLUSTER_ALIAS).toString();
        Map<String, Object> params = new HashMap<>();
        params.put("cluster", clusterAlias);
        params.put("key", "os%");
        return dashboardService.getOSMem(params);
    }

}